turbo exhaust on NA - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

kandyflip445 · 09-14-2002, 09:32 PM

I don't think it would do you anygood, unless you plan on going to turbo, to get a turbo sized exhaust(3" or bigger). The whole point of having a 'tuned' exhaust is scavenging. When an engine is on it's exhaust stroke it pushes the spent gasses out of the cylinder. When the gas is traveling through the exhaust piping it creates a kinda vacuum(can't think of a better work). That 'vacuum' pulls the rest of the spent gasses from the cylinder. That is why people ceramic coat headers and such also. Hotter gasses move faster, which increases scavenging. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/thumbs-up.gif" border="0" valign="absmiddle" alt=':thumbsup:'>

~Zook

09-14-2002, 09:32 PM	#5
kandyflip445 Post Whore! Join Date: Sep 2002 Location: Arden, NC Age: 40 Posts: 4,460 Trader Rating: (1) Rides Gallery: kandyflip445 Feedback Score: 1 reviews	I don't think it would do you anygood, unless you plan on going to turbo, to get a turbo sized exhaust(3" or bigger). The whole point of having a 'tuned' exhaust is scavenging. When an engine is on it's exhaust stroke it pushes the spent gasses out of the cylinder. When the gas is traveling through the exhaust piping it creates a kinda vacuum(can't think of a better work). That 'vacuum' pulls the rest of the spent gasses from the cylinder. That is why people ceramic coat headers and such also. Hotter gasses move faster, which increases scavenging. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/thumbs-up.gif" border="0" valign="absmiddle" alt=':thumbsup:'> ~Zook __________________ My 240 vBgarage